Effect of pretreatment with PTX (1 μg/mL) for 90 minutes and effects of the protein kinase C inhibitors HMG and chelerythrine on human monocyte migration elicited by Lp(a) (300 μg/mL). HBSS shows random cell migration in the absence of the chemoattractant Lp(a). **P < .01 versus appropriate Lp(a) control. Cell numbers are expressed as mean ± SEM per high-power field of four independent experiments.